Medium retaining device in single faced corrugated cardboard man

Details Medium retaining device in single faced corrugated cardboard man Medium retaining device in single faced corrugated cardboard man

1979-12-12

1981-01-20

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Press forming means, press reshaping means, or vulcanizing...

425369, B30B 300, B29D 714

Patent

active

042459753

ABSTRACT:
A plurality of longitudinally spaced annular suction grooves are formed in one of a pair of corrugating rolls on the peripheral surface thereof and a plurality of suction manifolds are formed in the corrugating roll and extend longitudinally of the roll in intersecting relationship with the annular suction grooves.

REFERENCES:
patent: 3954368 (1976-05-01), Kawakomi
patent: 3960475 (1976-06-01), De Ligt et al.
patent: 4116594 (1978-09-01), Leanna et al.
patent: 4202719 (1980-05-01), Linn

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